Emerald Mapping - SD or HD?

[CageyH]

Is there a reason that 500 rpm steps have been set as standard?

 

With so many speed sites available, is it worth mapping the engine at 250 rpm intervals? Will there be any benefits of this?

I realise that it will initially be a lot of extra work, but will the benefitbe worth the slog?

 

Only dead fish go with the flow....!

[oilyhands]

I've been involved with 250+ Emerald installations and never seen the 500RPM interval give a problem. The advantage is that most maps are currently developed using a 500RPM interval and would require some interpolation to adopt them on a different interval. It's not impossible to do, even in something like Excel but since there doesn't appear to be any problem so far, it has not been necessary.

 

The GEMS ECU uses 400RPM intervals and I have converted a few GEMS maps to Emerald in the past.

 

The area where a change of granularity might be more productive is in the load site grouping as generally the fuel numbers go up more rapidly across load cells than speed cells on the major parts of the map.

 

Oily

 

 

Edited by - oilyhands on 2 Aug 2010 16:42:45

[OliverSedlacek]

It takes long enough to generate a 500 RPM map! The only reason for having more map points would be to fix a problem where the interpolation doesn't get close enough because the engine characteristics change drastically within a map bin. That just doesn't happen.

[oilyhands]

Indeed

 

Oily